Loader for cement-mixers.



W. A. COOK.

LOADBR FOR CEMENT MIXERS.

APPLICATION FILED SEPT.7,1909.

978.1 36. Patented Dec. 13,1910.

Y .o in. 2 t

useful improvements in loaders for cement i'nixers and the like, it'hasfor its objects among others to provide an improved and simplifiedconstruction for this purpose whereby the lifting of the load is" madeeasier. I also fulcrum the bucket so that it will have a rockingmotion'causing it tobe projected with its spout, into the openend ofthemixer when discharging the material, and to withdraw out of the waywhen-the bucket is returned empty to placel'to receive anew load,

Other objects and advantages of the invention will hereinafter appearand the novel features thereof will be specifically defined by the'appended claims.

The invention, in its preferred form, is clearly. illustrated in. theaccompanying drawings, which, with the numerals of reference markedthereon, form a part of this specification, and in which Figure 1 is aside elevation showing the application ofthe invention. Fig. 2 is a viewat right angles to Fig. 1, looking in the direction of the arrow in Fig.1.

Like numerals of reference indicate like' parts in thedifi'erent views.

Referring to the drawings 1 designates the platform of the cement mixerwhich per se may be of any of the well known forms of construction ofwhich 2 is the revoluble receptacle of the mixer, 3 .its journalsmounted in suitable standards 4 rising from. the platform, while fromthe said platform rise the standards 5 connected at their upper ends byj a cross piece 6..

'2? are pulleys suitably suspended from the cross piece 6 as seen bestin Fig. 2 and over which pass the lifting ropes or the like 8 whichlatter are designed to be connected with some suitable source of power,such for instance as the winding drum of a hoisting engine, not shown.Theother ends of the said ropes are secured in any suitable man- 8 withthe bucket being near the center 'of ner to the sides of the bucket 9 asseen at 10, the points of connection of the ropes of the bucket atappoint in' front ofith'o points'lO are the ends of -the-bars1-l1which:

ends by the cross bar .12.... lihe..lifting*ropes 8 pass loosely overthis cross bar. z

nattheii upper gravity'of the load. Attached to .the sid es 13 are barssecuredto'the spout l5 or bucket as at 14, one end beingipivotallyconnectedwith the standardsh as :at516 and 2-" their other ends connectedwith 'the crossbar 12. The front ends of thebarsz13ypiojecta shortdistance'below the botto'mwof the spout as seen :best'in Fig. 1,inordemtd allow-0f the requisite movementof the spout, asr willsoon beexplaineda The operation'will be apparent foregoing description",especially when taken in connection with the" annexedtdrawin s;

briefly stated, it is as follows :edksishown y full lines in Fig. Lthebucket. is in itslower most position ready to be filled; whenfilled theengine is started and the lifting ro'pes bein attached to the bucket asdescribed, the ucket is raised; as the bucket rises turning upon thepoints 16 the pull on the ropes will elevate the bucket untll'the crossbar 12 is carried away from or out 'of contact with the ropes which'will complete the discharge by pullin directly on the bucket. At thestart the effect of this disposition of the parts will'be to increasethe effectiveness of the pull of the ropes and thus lift the loadeasier. The cross bar 12 simply changes the direction of the pull of theropes at the start. As the lifting progresses the bucket is rocked upon-its'ful'-' crum at 16 giving a rocking motion to the spout, causing itto project.into the open end of the mixer 2 when discharging materialthereinto, and to withdraw out of the way when the bucket is returnedemptyto its normal position on the ground ready vention or sacrificingany ofits advantages. 1

What is claimed asn'ew is 1. A loader for cement mixers comprising aframework, a bucket provided with 4 a spout, bars rigidly secured tosaid spout and pivotally'mounted in said framework, connections betweenthe. body of said bucket' and said bars, and means for lifting saidbucket.

2. A loader for cement mixers comprising a framework, a .:.bucketprovided with a spout, bars rigidly secured to said spout and pivotallymounted in said framework, brace bars rigidly secured to the body ofsaid bucket and having connection with said .pivot bars, and means forlifting said bucket.

3.111 a device'of the character stated, a

vertical framework, a bucket provided with Laspo'ut, means for pivotallymounting the spout on a horizontal axis on said framework, bars risingfrom the bucket to the rear of its pivot, a cross bar connecting theupper ends of said .bars, a pulley on the frame above the pivot of thespout and a lifting rope passed over said pulley and attached to thebucket and having abearing' on said cross bar during a portiononly ofthe lifting movement.

4. In a device of the character stated, a vertical framework, apivotally mounted ibucket having a spout pivoted on a horizontal axis ofsaid framework, bars r1s1ng f from the bucket to the rear of its pivot,a cross'j'bar connecting tlie said bars, a lifting rope attached to thebucket to the rear of the attachment of said bars, and a pul-:.ley=mounted on the framework above. the

- ing pivot of the spout and over which said rope passes, theconstruction being such that the rope contacts with said cross barduring a portion only of the lifting operation.

5. A loader for cement mixers comprising a framework,. a bucket.provided with a spout, barsrigidly secured to said spout and pivotallymounted in said framework, connections between the body of the bucketand said bars, and a lifting rope connected In testimony whereof I afiixmy signature 1 in presence of two witnesses.

WILLIAM A. COOK.

Witnesses:

JOHN J. SQHINDLER, A. J. SCHINDLER.

